The diagram below represents some steps in a procedure used in the field of biotechnology. Enzymes
)
+
Gene for
human
insulin
Cut
bacterial
DNA
Inserted into
bacterial cell
Bacterial cell
This bacterial cell can now be used to produce
1. the bacterial gene for insulin that can be inserted into humans
2. human genes for enzymes that can be inserted into humans
3. insulin that can be used by humans
4. enzymes necessary to treat human diseases

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.